Hi Jonathan and Nicola,
On Mon, 21 May 2012 00:23:11 -0500, Jonathan Nieder <jrnieder@xxxxxxxxx> wrote:
> Nicola Alessi wrote:
>
> > [ 6.734445] psmouse serio4: elantech: unexpected magic knock
> > result 0x3c, 0x03, 0x3c.
^^^^^^^^^^^^^^^^^
Yes, from this, the touchpad is probably Elan.
But it is meant to be used as such, a basic pointing device. Some NB
vendors may not require the multi-finger functions, for cost reason or
others. Elan touchpad reports this magic knock when it only supports
the basic mouse functions. With these touchpads, the multi-finger functons
are NOT TESTED and thus NOT SUPPORTED.
We used to have a "force_elantech" module param to force the TP to be
detected as Elan, but I removed it when I was updating elantech.c to
support newer models. Maybe you can convince Dmitry to add it back, but
still, this kind of Elan touchpads is not supported as multi-touch
pointing device, so I wouldn't recommand it.
I hope this helps.
Best regards,
-JJ
> >
> > I hope this can help.
>
> Yes, thanks much.
>
> One more question: how do you know this touchpad is an Elantech pad?
> E.g., is there another OS with a driver that detects it as Elantech?
>
> Based on [1] it seems the Amilo Pi 2515 ships with a variety of
> different touchpad models.
>
> Jonathan
>
> [1] https://bugzilla.kernel.org/show_bug.cgi?id=10942
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